Deaths

Please provide the estimated number of flu-related deaths by age group. All age groups must be completed. You can choose to enter estimated deaths among hospitalized patients only or total estimated deaths, including excess deaths occurring outside of a hospital setting.

In the next step, you will have the opportunity to add an expansion factor to reflect out-of-hospital deaths, if the data entered here include only deaths occurring in hospitalized patients.

Click on the plus + beside each age group to add a confidence interval (CI; optional).



	Lower CI
	Upper CI

	Lower CI
	Upper CI

	Lower CI
	Upper CI

	Lower CI
	Upper CI

	Lower CI
	Upper CI

Where can I find flu-related hospitalization or death data for my country?

If you do not already have the number of flu hospitalizations or deaths for your country, you can check to see if those data have been reported by your national public health agency, the WHO Global Influenza Programme, or the WHO FluID platform. You may also enter your own estimates. If estimates are not already available for your populations of interest, guidance for generating estimates is available in WHO’s Manual for Estimating Disease Burden Associated With Seasonal Influenza.

More about confidence intervals

In most instances, flu surveillance data are incomplete. Official figures often extrapolate from reported data to estimate the total number of cases, hospitalizations, and/or deaths for the total population or sub-populations or age groups of interest. These estimates inherently include a degree of uncertainty, depending on the volume and quality of the underlying data. A confidence interval (CI) is one tool for expressing that uncertainty, providing range of values that are expected to contain the true value (e.g., mean) a certain percentage of the time, commonly at the 90% or 95% level. If you choose to do so, you can provide 95% CIs for your data, and the Flu Tool will adjust the outputs accordingly.